Machine for making the press members or base portions of electronic tubes



Feb. 23, 1943.

w. G. SCHNEIDER ETAL 2 00 MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheej; l

ATTORNEYS.

b 23, w. G. SCHNEIDER m-AL 2,312,003

MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 ShetS-Sheet 2 41 69 I /130 .126 a 61 15 ag 7-161 INVENTORJ WMW fcfi/w'm (J W W'nudw- Y ATTORNEYS.

Feb.23,l943.

w. G. SCHNEIDER EI'AL ,3 003 MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 5 43 5 E, 5 Hi e BY\ (J mtm (MM ATTORNEYS 1943- G. SCHNEIDER EIAL 2,312,003

MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 6 A INVENTORY ATTORNEYS Feb. 23, 1943.

W. G. SCHNEIDER ETAL MACHINE FOR MAKING THE PRESS MEMBERS 0R BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 7 H" I z a I 32 L 32 H 5 w y a 6 j I 866 i 5 I j 1868 EEJ 18 E1 T F |G.|6. FIGJ7. FIGJS.

ATTORNEYS 1943- w. G. SCHNEIDER EI'AL MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 8 ATTORNEYS Feb. 23, 1943. s

MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 9 III I =rllm I 4 .L llllLllllllll-l INVENTORS aw MW JC CHNEIDER EI'AL 2312003 I B l a/MM ATTORNEYS Feb. 23, 1943.

w. e. SCHNEIDER EIAL 2 00 MACHINE FOR MAKING THE PRESS MEMBERS 0R BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 1O .Feb. 23, 1943.

w. G. SCHNEIDER EIAL 2, 0 MACHINE FOR MAKING THE PRESS MEMBERS OR BASE PORTIONS OF ELECTRONIC, TUBES Filed June 8, 1940 14 Sheets-Sheet l1 y w 7 IHI lmmmlmml J51 5 f y 41 i j l HIIIIIIHIIHHIHII PIC-3.37

M (Maw JMYENTORS 2 m m may ATTORNEYS Feb. 23, 1943. w G sc g b r 2,312,003

MACHINE EOR MAKING THE'PRESS' MEMBERS OR BASE PORTIONS OF ELECTRONIC TUBES Filed June 8, 1940 14 Sheets-Sheet 14 524mm 7km W TTORNEYS Patented Feb. 23, 1943 MACHINE. FOR MAKING THE PRESS MEM- BERS OR BASE PORTIONS OF ELECTRONIC TUBES Walter Gustave Schneider and Gerhard Gunther Schneider, East Orange, tional Union Radio Corp N..J., assignors to Naoration, Newark, N. J.,

a corporation of New Jersey Application June 8, 1940, Serial No. 339,584

13 Claims.

This invention relates to a new and improved machine for making the press members or base portions of electronic tubes, and more particularly the electronic tubes which are used in radio receiving sets.

One of the objects of the invention is to produce a reliable high speed machine, which will greatly facilitate the work of the operators of said machine.

Another object of the invention is to provide a machine which has a plurality of spindle units and of die mechanisms which are respectively associated with said spindle units, said spindle units and die mechanism and the operating mechanism for operating the same being located on associated movable members which are operated intermittently in unison. These intermittently operated members may be turntables or the like.

I Another object of the invention is to provide a machine with a continuously operated member, such as a continuously operated turntable, which will rotate the spindles of said spindle'units.

Another object of the invention is to provide a machine which issubstantially free from heavy overhead parts which must be vertically actuated and which will provide convenient access to the spindle units and to the die mechanisms.

Another object of the invention is to provide improved means for assmbling the press blanks withtheir terminals and with their central tubes.

Another object of the invention is to provide improved mechanism. for heating and for annealing the pressv blanks- Another object .of the invention is to provide improved mechanism for rotating. the press blanks during certain stages. of the operation of the machine, to lock the. press blanks against rotation during. other stages of such operation, and to automatically release the completed press blanks. from their respective supporting dies.

' Other objects of my'invention will be set forth in th following description and drawings which illustrate certain preferred embodiments, it being understood that the above statement of the objects of my. invention is intended to generally explain the same without limiting it in any manner..

Fig. 1 is a perspective-view showing the press member of anelectronic tube, said press member being made of glass- .orother suitable material.

Fig. 2 is a perspectiveview showing the assembly of the press member with the terminal rods or wires and also with the upstanding integral glass tube which is used for producing the vacuum in the tube, and for sealing the tube.

Fig. 3 is a front elevation of Fig. 2, partially in section.

Fig. 4 is a top plan view of the improved machine. In this embodiment the machine has twenty-four spindle units, but the number of such units could be varied.

die downwardly to its toshow the mechanism for driving the Fig. 5 is a vertical Fig. 4.

Fig. 6 is a detail view of a partof Fig. 5, showing the upper die in full lines in its lower position to which it ='is mechanically actuated, Just before the air valve is opened to move said upper final, lower position. In Fig. 6 the broken-line position oi.- the upper die shows its final position. is shown in its top position.

In Fig. 7 is a partial horizontal sectional view, partially in elevation, on the line 1--l of Fig. 5.-

Fig. 8 is a partial horizontal plan view, on the line 8-8 of Fig. 5, part of the representation of the turntable having been broken away, in order spindles.

Fig. 9 is a vertical cross-section, partially in elevation, on the line 9-9 of Fig. 4.

Fig. 10 is a horizontal sectional view, in elevation, in the line Ill-Ill of Fig. 9.

Fig. 11 is a partial bottom plan view of 9.

Fig. 12 is a plan view, partially in section, on the line i2--l 2 of Fig. 9.

Fig. 13 is a vertical cross-sectional view, partially in elevation, on the line l3|3 of Fig. 9.

Fig. 14 is an elevation, partially in section, on the line M-it of Fig. 13.

Fig. 15 is a top plan view of Fig. 9.

Figs. 16-18 are respective vertical cross-sections, partially in elevation, on the respective lines Iii-i8, ll-ll and I8i8 of Fig. 4-.

Figs. 19-21 are respective top plan views of Figs. 16-48.

' Figs. 22-26 are respective vertical sections, partially in elevation, on the respective lines 2222, 23-23, 24-24, 2525 and 26-26 of Fig. 4.

Fig. 27 is a view similar to Fig. 22, showing a modified type of spindle head. I

Fig. 28 is an enlarged partial detail sectional section on the line 5-5. of

partially view of the terminal-supporting means of Fig. 27. Fig. 29 is a vertical partial sectionalview, partially in elevation, on the line 2929 of Fig. v5.

Fig. 30 is similar to Fig. 29, showing the lower position of the upper die, to which it is me-' chan-ically actuated. In this position, the upper die is intermediate its top position audits final lower position. 7

In Fig. 5' said upper die Fig. 31 is a view similar to Fig. 30, showing the final lower position of said upper die.

Fig. 32 is a vertical partial sectional view on the line 32--32 of Fig. 4, showing how the fused press has been pushed upwardly from the position shown in Fig. 31, prior to the removal of the completed press from the apparatus.

Fig. 33 is a. vertical elevation, taken at the line 33-33 of Fig. 4.

Fig. 34 is a cross-section, partially in elevation, on the line 34-34 of Fig. 4.

Fig. 35 is a top plan view of Fig. 34.

Fig. 36 is an elevation, taken at the arrow 33 Fig. 4.

Fig. 37 is an elevation, at the line Fig. 36.

Fig. 38 is a top plan view of Fig. 37.

Fig. 39 is an elevation, at the line Fig. 4.

Fig. 40 is a horizontal sectional view, partially in elevation, on the line 43-40 of Fig. 39.

Fig. 41 is a vertical cross-section, partially in elevation, on the line 4 l-4l of Fig. 4. a

Fig. 42 is a section, partially in elevation, on the line 42-42 of Fig. 41.

Fig. 43 is a partial diagrammatic plan view, showing the mechanism for operating the burners.

Fig. 44 is a plan view showing a part of one of the spindle units, and the burner mechanism used therewith.

Fig. 45 is a side elevation of Fig. 44.

Fig. 46 is a front elevation of one of the burners, taken along the line 46-46 of Fig. 44.

Fig. 1 shows a conventional press or base portion P of an electronic tube which is used in radio receiving sets. This press is of conventional shape and itis provided with the usual holes I adjacent its periphery, and the usual central hole 2. The press P is usually made of glass. Fig. 2 shows the conventional wire or rod terminals 3 which project through holes I, and also through the integral lugs 4 of the press P. Said lugs 4 are fused around the inner ends of the terminals 3, in order to provide a gas-tight closure. Fig. 2 also shows the conventional glass exhaust tube 5, which is sealed gas-tight to the wall of the central opening 2 of the press.

In general, the machine has a top turntable and a bottom turntable and an intermediate turntable. These turntables maybe replaced by any suitable carriers. The top and bottom tumtables are intermittently rotated in unison, and the intermediate turntable is rotated continuously. The three turntables are rotated in the same direction. Spindle units, which include lower dies, are mounted on the top turntable. The intermediate turntable has drive means for turning said lower dies, and said drive means are released or unmeshed at a predetermined point in the operation of the machine. An upper die is rapidly lowered and raised while the lower die is locked against turning movement, in order I rests upon the top of the hub of 3 is fixed to hub 1 by one or more clamping screws 3, or in any suitable manner. The hub of an intermittently rotated first turntable T is keyed to a bushing i3, which is freely rotatable around hollow column 3. The hub of turntable T rests upon the hub 1. Suitable anti-friction bearings may be provided in any part of the machine.

A second turntable H, which is continuously rotated in the same direction as the first and intermittently rotated turntable T, has a hub Ha which is freely turnable relative to bushing Ill. The mechanism for turning the spindles of the spindle units of the machine is located in part on said second turntable. The hub Ila the first turntable T.

The third and top turntable l2 has a hub in which is keyed to bushing ill by one or more turntable T and bushing l3 and rotated intermittently in unikeys 13a, so that turntable l2 are vson. -The spindle units are located on the top turntable l2.

All the turntables are rotated in the counterclockwise direction which is indicated by the curved arrow in Fig. 4.

Fig. 5 also shows a bracket i5, whose hub is rigidly and detachably connected to the stationary column 8, by clam-ping screws it or other suitable means. Said bracket has a radial arm, on which the upper die and its associated parts are .mounted for vertical movement.

Referring to Figs. 5 and 9, the second or intermedlate turntable II has a ring gear 85 connected thereto by screws 83. This ring gear 35 has gear teeth 31.

Referring to Fig. 7, a sprocket 83 is driven by a chain 33 by means of a suitable motor. The shaft of said sprocket 38 has a worm 33, which meshes with and which actuates the worm gear 33 of the main shaft 3!.

A cam 32 is keyed to said main shaft 9|. Said cam has ribs which provide the cam groove 33. Said cam groove 33 comprises spaced end-portions 33a and 93b which are perpendicular to the axis of rotation of main shaft ill. The intermediate branch 3'30 of said cam groove has the shape of a portion of a helix, and said interinclined to the axis of rotation of main shaft 3| The end-portions 33a and 33b are spaced from each other in a direction which is parallel to the axis of rotation of main shaft St.

The projection of said cam groove, in a plane perpendicular to the axis of rotation of main shaft 3 I is a closed circle.

Fig. ,5 shows two of the cam rolls 34, each of which is turnably mounted at the underside of the first turntable T, by means of a pivot-pin 35. In this particular embodiment, there are twenty-four spindle ;unitsS, and the first tumtable T has twenty-four cam rolls 34, each camroll 34 being associated with a respective spindle to shape the heated blank between the respective lower die and said upper die. Automatically operated jaws hold the tube 5 in proper position to be sealed to the wall of the central opening 2.

IMPORTANT MOVABLE AND S'rArIoNAnr SUPPoa'rINo Pears on THE MACHINE, AND THE Darya MECHA- NISM FOR THE MOVABLE Surroarmc PAn'rs As shown in Fig. 5, the machine has a frame or base 6, which is fixed to any suitable support. The base 3 has a vertical hub 1, in which a hollow vertical column is located. This column unit S. The number of spindle units can be varied. Therefore, the continuously rotating main shaft 3| intermittently turns the first turntable T by means of the cam groove 33 and the rolls 34, and the turntable T is locked between the intermittent movements thereof. When a respective roll 34 is located in either the endbranch 33a or the end-branch 33b, the turntable T is locked against movement. When the respective cam roll 34 is located in the intermediate branch 330, the turntable T is rotated through a predetermined arc. As each roll 34 leaves the cam groove 93, the next roll is in position to enter the respective end-branch of the cam groove 93.

Since the first and third turntables T and I2 are respectively keyed to the rotatable bushing l6, said turntables T and i2 are rotated and locked in unison. As previously stated, the third turntable l2 supports the twenty-four spindle units S.

Referring to Figs. 7 and 8, the main shaft 8|, whose axis of rotation is horizontal, is provided with a bevel gear 96 which meshes with the bevel gear 91 of a vertical shaft 98. This vertical shaft 98 is turnably supported in a suitable bearing which is connected to the frame of the machine.

Said shaft 98 has a gear 99, which meshes with the previously-mentioned gear teeth 81 of the intermediate turntable ll, so that said tumtable II is continuously rotated in a predetermined direction.

The spindle um'ts S I Said spindle units S are identical. As' shown in Figs. and 9, the parts of each units S are mounted in a combination bracket and housing 20, and said members 20 are respectively connected to the turntable l2 by screws 2| or .the i like.

The spindle l9 of each unit S is located in a sleeve 22.

As shown in Fig. 9, a collar 24 is fixed to sleeve 22 by a pin or screw 23. This pin 23 fits slidably in a vertical slot 23a of spindle I 9. Said pin 23 acts as a slidable key. Spindle l9 and sleeve 22 therefore turn in unison, and spindle l9 can be moved upwardly relative to sleeve 22.

The normal position of pin 23 is shown in Fig. 9.

A second and lower collar 25 is rigidly connected to the spindle l9 by means of a pin or screw 26. A compression spring 21 has its lower end abutting the collar 25, and its upper end abutting the collar 24. A second compression spring 28 has its lower end abutting the collar 24 and its upper end abutting the inner wall of a vertical recess which is provided in the bottom of a-pinion 29, which has teeth I56, The pinion 29 is fixed to an upper pinion or gear 39. This can be done by a drive fit or in any suitable manner. The pinions 29 and 39 are releasably connected to the sleeve 22 of spindle i9, in order to urn said sleeve in unison with said means of a friction clutch. The pinon 30 and pinion 9 can turn in unison relative to sleeve 22 and spindle l9, when said friction clutch slips. A cone-type male clutch member 3! is rigidly connected to the.sleeve 22, as for example, by a releasable clamping screw or a drive fit or the like. The upper face of said clutch member 3| is close to the bottom of hub 32 of member 20, so that sleeve 22 cannot be moved upwardly. The upper face of the gear 39 is provided with a recess which serves as a female clutch member.

This recess may have a suitable friction lining.

The springs 21 and 28 maintain these clutch members in operative contact. A bushing 33 is fixed in the hub 32 of member 20. This bushing 33 serves as a bearing in which sleeve 22 is revolved in unison with spindle l9. The sleeve 22 is provided with a head 34. A collar 35 is connected to said head 34 by one or more clamping screws 36 or the like. The head 34 of sleeve 22 rests upon an anti-friction washer, which is spindle, by

c 3 22 is thus held against any vertical movement by its head 34, the aforesaid washer, and the male clutch-member 3|. A collar 31 is located in the top recess of the collar 35, and said collar 5 31 is rigidly but detachably connected to the sleeve 22 by clamping screws or the like. A cap I! is supported upon the top of the spindle l9, which projects above the sleeve 22. The cap i1 i provided with a vertical slot in which a lateral pin 38 of the spindle I9 is located, so that the cap I! and the spindle i9 turn in unison. The cap I! has a head l8. The collar 31 is provided with a pair of upstanding arms 39. which are provided at their upper ends with an integral collar 48. The lower die D of each 'unit S is supported by said collar 40. The flange of die D is fixed to collar 48 by means of a clamping-plate 4 I, which is connected to the collar 48 by means of screws 42. There is a clearance between the top-wall of head l8 and the adjacent lower wall of the die D, The spindle l9 and its head l8 can be moved upwardly from the normal position shown in Fig. 9 and Fig. 29, to the position shown in Fig. 32. 1 The die D is provided with suitable. vertical bores 3b in which the ope ator can locate the terminals 3, before applying the press member P to the die D. The press member P and the terminals 3 are applied to the die D, in the manner shown in Fig. 23, after said press member P has been preheated, but while it is substantially rigid.

Referring to Figs. 5 and 9, the gear 30 meshes with the intermediate gear 43, which is releasably clamped or otherwise secured to a sleeve 44. A rod is located slidably in the sleeve 44. The housing 28 is provided with a hub 46, in which a bearing-bushing 41 is fixed. The sleeve 44 can move freely relative to this bushing 41. A collar 4 48 normally abuts the upper end of the fixed bushing 41. This collar 48 is releasably fixed to the sleeve 44 by screws 49 or the like. A compression spring 50 has its lower end abutting the collar 48, and its upper end abutting a collar 5i. The collar 5| and sleeve 44 are freely movable relative to each other, collar 5| is provided with a pair of laterally projecting pins 52 which are diametrically opposed. These pins 52 are located in the circumferen- 50 tially elongated bores 53 of a yoke 54, which has a U-shaped horizontal cross-section. The yoke 54 has an integral lug 55, which is connected pivotally at 55 to a strap 51. As shown in Fig. 9, the strap 5'! is rigidly connected by screws 58 to the housing 20. The integral lug 55 is provided with a reduced latch projection 59, which can enter a suitable recess 68 of the collar 35. This recess 68 is also shown in Fig. 10. When latchprojection 59 enters recess 69, the sleeve 22 and its-spindle I 9 are locked against turning.

The weight of yoke 54 normally holds it in the position shown in Fig. 9-, in which the latchprojection 59 clears the recess 60.

Fig. 34 shows/the: yoke 54 in the position in which the latch-projection 59 enters the recess 69. The gear 43 is. then unmeshed from gear 30 and the gear teeth 84 oi'turntable ll.

As shown in Figs. 9 and-13, a collar 6| is releasably rigidly connectedbyscrews 62 or the like.

to the top of the sleeve.

As shown in FigssQand 12, a lever 63 is pivotally connected at 64 to a strap 65, which is rigidly connected by screws 66 to the housing 20. The lever 63 is provided with a. yoke-shaped head supported on..the fixed bushing 23. The sleeve 76; 61, which is provided with pins upon "which As shown in Fig. 13, the

has a drive seat in rollers .68 are .turnably mounted. As shown in Fig. 313, these rollers 6:8 abut the top of the :collar iI. A compression .spring .63 has its upper end abutting the adjacent end of the lever '68. Said compression spring 88 is mounted upon the upper end .of a vertical rib I of the housing 20, and a suitable stop is'provided for the lower end of the spring 68. The compression spring 69 is under initial compression, and by means of the yoke 81 and the rollers 88 and collar 0|, it downwardly urges the sleeve 44 and the gear 43, to the meshing position shown in Fig. 9. The collar .48 sets as a stop for preventing the downward movement of the sleeve 44 below the position shownin Fig. '9. Therefore the collar BI is normally vertically spaced from the collar 5|.

The rod 45 extends above the yoke '51. A cam .II .is fixed to the-rod 45 by means of a pin I2. This cam II is located in a guard member I3,

which has a U-shape in horizontal cross-section.

This guard member I3 is connected by a drive fit or -the like to a cap 14, which is rigidly connected to'the head of the strap 65 of the housing by means of the screws 15.

This cam 11 has a top projection whose upper end is tapered. Cam II can be raised to the intermediate upper position shown in Fig. 16, or to the top position shown in Fig. 18. This is done either :by raising rod 45 relative to its sleeve 44, orby raising both the rod 45 and the sleeve 44.

Above the cam II, the rod 45 is provided with a collar .16 which is rigidly connected thereto by means of a pin 11. A compression spring 18 has its lower end abutting-thecollar I6, and its upper end abutting the shouldergof a bushing I9 which ,lnib 14a of the cap I4. The spring I8 yieldingly'rhaintains rod 45 in the normal position shown in Fig. 9. A cap 19a is fixedto'the top of rod 45, in order to prevent rod 45 from being moved below said normal position.

The cam II operates the associated cam-rolls 80. As shown in Fig. 13 and Fig. 15, these camrolls '80 are respectively tumably connected to arms 8|, which are respectively pivotally connected at 82 to the cap I4. These arms 8| are respectively provided withhalf-round jaw members 83. A tension spring 84 is connected to arms 8| and it normally holds the jaw members 88 in contact. When the rod 45 is raised to the intermediate position shown in Fig. 16, the jaws are opened to the intermediate position shown in Fig. 19. When rod 45 is raised to its top position shown in Fig. 18, the jaws are separated to their maximum extent, as shown in Fig. 21.

.Thelever 83 extends through a slot or bore of the strap 65, said bore having sumcient clearance for the-movement of the lever 63. The walls is shown in Fig. 24, which also .shows the abutting edges 83c of the recesses 88b of said jaw members 83. When suilicient downward force :is exerted .by the member I'll upon the top of the tube 5, as illustrated in Fig. '25, the jaws 88 are slightly separated by said downward force so as to force the tube 5 through the bore which is formed by the recesses 83b. The vertical walls of the recesses 83b then tightly and frictionally grip the tube 5, between the ends of said tube 5. The recesses 83b may have suitable resilient linings. As previously stated, the Jaw members 88 respectively have shoulders between thencesses 83a and 83c. These shoulders .may be slightly tapered downwardly, so as to force the jaw-members 83 slightly apart from each other, when the machine first exerts downward pressure on tube 5. r

The intermediate gear 48, which normally meshes with the gear or pinion 30, also normally meshes with the gear teeth 84 which are pro-' vided at the periphery of the continuously rotating intermediate turntable II.

Means for heating the press members The machine is also provided with a series of burner nozzles in which gas or other fuel can -be burned, in order to heat the glass press members.

These nozzles are mounted at fixed stations. Referring to Fig. 4, the burner nozzles I00 and MI are held fixed at the respective stations ticn of the three turntables. Referring toFig.

' to'thef-rame 8 of the machine.

of this slot or bore guide the turning movement of the lever 63.

As shown in Fig. 22, the jaw members 83 are provided-with top guide-recesses 83a, which form a guide for the insertion of the tube 5 by -the operator, when the law members abut each other as shown in Fig. 24. Said jaw members 83 are also'provided with recesses 83b, between whose walls the tube 5 can be firmly clamped.

In operating the machine, the jaw members 85 abut each other when the tube 5 is inserted by the operator between the walls of the top recesses 83a. This can be done easily, as suflicient .clearance is provided. The vertical walls and the shoulders at the inner ends of recesses 830 then support the tube 5 and said vertical walls may grip the tube 5 lightly or not at all. This 45, each nozzle I01 is rigidly fixed to a respective supply pipe I08, which is connected by a flexible conduit I09 to a suitable source of gas. Said burners may be replaced by any suitable heating means. The air is supplied to each burner nozzle I01 in the usual manner. Each nozzle I01 is connected by a cross-rod II5 to a vertical rod IIO, which is-rigidly connected to an arm III. The two burner nozzles I01 at each of the. stations I02-I06 inclusive, are thus operated in unison. The arm- H I at each said station I02-I 08 inclusive is rigidly connected to a respective shaft II2, which is mounted tumably in a respective bracket II4, which is rigidly connected Each shaft II! has the respective arm "III keyed .thereto, so that each shaft II I turnsin unison with its arm III and with the associated pair of burner nozz1es-I0I. Adjacent shafts II2 are connected by arms H6 and 8a. Each arm II6a carries .a

coupling 'I I1 and each arm II8 has an integral can be cast integral with one of the arms H6. The arm I19 has a cam roller I20,which cooperates with the cam H8. so that the nomles I01 are intermittently rocked back and forth in aradial direction 'in order to permit the press blanks to enter the respective stations, during the intermittent movements of the turntables I2 and T. During the intermittent turning movement of the turntable T, the burner nozzles are rocked to the broken-line position shown in 45, in order to clear the lower dies D. While the turntables '1 and I2 are maintained stationary,

the nozzles I01 are moved to the full-line position shown in Fig. 45, in order to heat the respective blanks during the periods of rest of said turntables T and I2. A spring (not shown) maintains the roll I in contact with the surface of the cam II8.

A station I 2I is provided with a pair of said burner nozzles I01. Inaddition, it is provided its sleeve 22, until latch-projection 59 registers with and enters the recess.

7 As shown in Fig. 4 and in Figs. 36-38, a rack I5I is provided at station I23.

As shown in Fig. 37, the rack I5I is mounted at the upper end of an arm I52, which is pivoted at I53 to the frame 6. The arm I52 has a-rigidly with a pair of supplemental burner nozzles I22,

to wmch a mixture of gas and oxygen is supplied, in order to increase the temperature to which the respective press blank P is heated. The supplemental burner nozzles I22 are connected to the supports of the burner nozzles I01 at the station I 2|, so that the four burner nozzles at said station I2I are moved radially in unison.

The station I23 has three burner nozzles I24, to which a mixture of gas and oxygen is supplied, so as to increase the temperature to which the press blank P is heated. These nozzles I24 are also rocked radially, by the aforesaid means.

The station I25 has a pair of rockable burner nozzles I24, to which a mixture of gas and oxygen is supplied. The heaters at station I 26 are identical with those at station I25. All the burner nozzles at the stations I02-I06, and at stations I2I, I23, I25 and I26 are rocked in unison. The respective press blank P reaches its highest temperature at the station I26, so that the glass is sufficiently soft at said station I26, in order to shape said blank. No heating means are provided at the station I2'I. The gears 43 remain in mesh at the successive stations I96-I25 inclusive, in order to continuously rotate the dies D and the blanks in the first heating zone.

The operation of the machine at stations 126,

Two identical and radially separated cams I48, one of which is shown in Fig. 17, are provided at stations I26 and I2I. 'Each said cam I48 has a slope I46a at its anterior end, and a horizontal top surface I48b. As shown in Fig. 40, the anterior slopes I48a of said cams I48 are located anterior station I 26. As shown in Fig. 3, said cams are fixed to an arm I49, which is fixed to the frame of the machine by screws I50.

These cams I48 force gear 43 upwardly to the position shown in Fig. 17, thus unmeshing the respective gear 43 from its gear 30 and also from the gear teeth 84 of the turntable I2. The lever 63 is also turned to the position indicated in Fig. 37. The gear 43 will be retained in said unmeshed position, as long as it slides on the horizontal surfaces I48b-of said cams I48. As

shown in Fig. 17 and Fig. 37, the pin 45 rides between the spaced cams I48, 50' that pin 45 remains in the position shown in Fig. 9. Therefore the cam 'II is not raised above the position shown in Fig. 9 and Fig. 13, and the jaws 93 are not opened by the cams I48. When gear 43 is thus unmeshed, the simultaneous upward movement of the collar 49 of sleeve 44 compresses spring 50 and raises collar 5|, thus urging yoke 54 to the operative position which is shown in Figs. 34 and 37, so as to lock the spindle I9 and the die D against turning.

When the gear 43 is thus unmeshed and the yoke 54 is thus actuated, latch-projection 59 may be out ofregistration with recess 60.

Auxiliary means are therefore provided at station I25, in order to turn the spindle I9 and connected leg I54, which hasthe usual cam roll I55a, which is operated by cam I55 of shaft 9|. The tension spring I54a holds the roll I55a in contact with cam I55. The rack I5I meshes with the teeth I56 of pinion 29. Back I 5| turns spindle I9 in a direction reverse to the direction in which spindle I9 is turned bygear 43, when this is in mesh with gear 30. Before the respective lower die D comes to rest at station I26, its spindle I9 and sleeve 22 and locking-collar 35 are turned 360, in order to ensure the entry of latch-projection 59 into recess 60and the locking of said die D. The friction clutch between gear 30 and sleeve 22 functions in the usual manner to relieve the stresses which result from the meshing and unmeshing of gear 43, and the change in direction of rotation of sleeve 22.

After the respective die D is stationary and locked against turning at station I26, the tube 5 is forced downwardly at said station from the position shown in Fig. 24 to the position shown in Fig. 25. g

This is done by the mechanism shown in Figs. 39 and 41.

An arm I30 has a hub which is fixed to the vertical rod I33, which is slidably guided in the arm 6a of frame 5. Said arm I30 haslegs I3I and I32, which have lateral heads. The leg I 32 is shorterand lower than leg I3I. A collar I35 is releasably fixed to rod I33 by pin I36- A compression spring I34 normally maintains rod I33 in the position indicated by the broken-line position of leg I32 in Fig. 41. The yoke-shaped llig'gd of a lever I38 embraces the pin I 3'! of rod Lever I 33 has an arm I38a, whose cam roll I40a abuts the surface of cam I40 of shaft 9I. The leg I3I is located at station I26 and the lower leg I32 is located at station I21. The cam I40 thus downwardly moves the rod I33, and the legs I3I and I32. 3

The head of leg I3I moves tube 5 downwardly at station I26. The laws 83 open slightly and sufficiently under the pressure which is exerted on tube 5 to permit this, and said jaws 83 grip the tube in the position shown in Fig. 25.

The leg I32.is operated at station I2'I bycam I40, and members I33, I38 and I30a, while the die D is stationary, to force tube 5 to the position shown in Fig. 26 and Fig. 29.

The tube 5 slides between the closed jaws 83, while said tube is actuated by armI30.

Mechanism at pressing station 128 recess I29a, and a central bore or recess I 4|, and

a stem 29.

Fig. 5 shows an air-inlet line I59 which is connected to any suitable source of compressed valve casing- I51 has a conventional two-way valve which controls the ports of the pipes I59 and I60. This valve is' not shown because it is well-known per se. The pipes I59 and I60v 6 operate alternately as pressure pipes and as exhaust pipes in the usual manner. The pipes I89 and I88 are connected by flexible pipes "I and I82 to' the ends of a cylinder I83, in which the usual piston is provided. This piston. is *not shown. This piston is connected to the piston rod I84, to which the upper The cylinder is lowered by mechanical means until the die I28 is in the position shown in E18. 30, prior to operating the piston rod I84. For this purpose, and as shown in Fig. 5, the cylinder I83 is provided with collars I88 and I81. Each of these collars has a lateral dove-tail. projection, and said projections slide in the vertical slot of a corresponding fixed guide I85 which is secured to member I5. A link I98. is pivotally connected at I18 is pivoted at I1I to 9. lug of the bracket I5 which is connected to the frame of the machine. The lever I18 is pivotally connected at. I12 to the link I68. The lever I18 has a. notched end, and the: pin I13 is located in said notch. The pin H3 is connected to the rod I14, which isslidably located in the column 8. A compression spring I15 has its upper end abutting the lower end of the column 8, and its lower end abutting a collar I18 which is fixed. to the lower end of the rod I14. Alever I11, which is pivoted to the frame of the machine at I18, is operated intermittently by the cam I19 of the shaft 9I.

For this purpose, lever I11 has the leg; I11a, which has the, cam roller I11b.

The valve in the casing I81 is provided with the usual actuating rod I88, whichhas the usual compression spring I8I, which biases said valve to normal closed position. The valve-rod I88 is operated to open said'valve by the lever I82,- which is pivoted at I38 to the frame of the machine. by means of the cam I84; which. is shown in Fig. 7. Lever I82 has the legv I82a, which has the usual cam roll.

Hence, at station I28, the upper die I29 is first moved mechanically 'to the position shown in Fig. 30, so that the top of tube 5 is located above the recess I29a, and the top of said tube 3 is located in recess or bore I4:I of die I29.

This i done by means of cam I19 and its.

associated parts, which lower thecylinder I83, until die I29 is in'the broken-line position shown in Fig. 6.

Air is now admitted successively to the upper and lower ends of cylinder I93 by cam I84, thusrapidly lowering and raising piston rod I84 and die I29. The heated blank is thus rapidly shaped and united with the lower end of tube 5. The bore I of die I29 may be wholly open, or it may: have an end-wail which downwardly presses tube 5 to its final position, when upper die I29 is lowered by the piston rod I84 to its final lower position. v

In order to facilitate the rapid down-and-up movement of upper die I29, the jaws '83 are opened so as wholly to release the tube 5 during this rapid movement., Such open position of the jaws is shown in Fig. 30. The bore I4I holds tube 5 in proper centered position at this stage, so that the jaws 83 can be in inoperative position.

The jaws 83 are rapidly moved to inoperative position by means of the rod I43, which is shown in Fig. 5. This is slidably located in a ,hub of frame 8. Said rod has a head I43c. When rod I43 is raised, its head I430 raises pin 45 sufficiently so that its cam H is moved at least to the position shown in Fig. I8, so as to open the jaws. The head I430 may be of the same size die I29 is connected.-

asiaoos I69 to the top collar I88. A lever the jaws 83 are in the intermediate open position as' rod 48, so that head i431.- can' enter the'bore of sleeve" 44, thu raising II to thevposition shown in Fig. l8, thus sepa tinaiaws- 88 to the maximum extent shown in Fig. 22.

The rod I48- is raised by arin. I44, which: is

rigidly connectedpto the turnable pin t4. which is turnably located ina: bearing of irame'l. Arm I48 is rigid with pin I48. Said am: I48 has'tlie usual cam roll whichabuts the cam I 4'1' ofshaft 9|, so that rod 32 is moved" to open. the laws 83 at the proper time.

- Operations alter the pressing static;

Between the pressing station I23 and the-next station I88, the hub of the gear 43 of the respective spindle unit rides oil the cams I48. Also. the rod 45 is raised relative to gear 43 by the cam I88. The rod 48 is raised by theentrance slope I88a of said cam I88, which is-shown in Fig. 16, so that the rod 48 rides on thelower horizontal surface I861) of cam I88, at stations I85, I81, and I88. The gear 43 remains in mesh at said stations I85, I81, and I88, sir that the.-

respective die D isrotated at said stations.

As shown in Fig.- 34; cam I88 is fixed to the arm I99d, which is fixed to the frame 8. While the rod 45 ride on the surface I88b of cam H9,-

shown in Fig. 19, so that tubei can rotate freely in unison with die D and the blank, at said sta tions I85, I81 and I88. Additional burners I91 arelocatedandrocked at said stations I857, I81, and I88, in order to heat the blank, so as to finishand anneal the blank. I

When the respective spindle unit leaves the station I88, the gear 43 and the rod-45 ride up the intermediate slope I88d of the cam I88, to the top horizontal surface ofI88c of cam I88. As shown in Fig. 18, this unmeshes gear 43", and'the jaws are opened to their maximum extent, as shown in Fig. 21.

Likewise, between stations I88 and ,I89, andpreferably after the respective spindle I9 has stopped turning, said spindle I9 is raised to the position shown in Fig. 32, thus raising the press relative to the respective die.

The spindle I9 is thus raisedb'y the cam I99], which is fixed to arm Wile, which is fixed to the frame 8. Said can I 98] has an entrance slope I98a' and a horizontal top surface me,

along which the bottom of spindle I9 slides. Therefore, when the respective spindle unit is brought to rest at station Its, the Jaws 83 are opened to their maximum extent, the respective spindle is is stationary, and said spindle I9 is in its upper position.

At the station no, the parts or the spindle unit are in the identical positions of station I89; so that one of the operators can remove the completed blank eitherat station I89 or I98; The completed press may be-placed by the operator on a conveyor belt or the like (not shown). The

press may be subjected to any additional annealing or other finishing operation after it has been removed from the machine. At either of'the'stations I89 and I90, the blank issufllciently rigidso that it can be handled a' pair of tongs.

The relative positions. oi the parts orthe re spective spindle unit remain. substantially un changed at stations I91, I92, I93, 50 that the v jaws remain fully open and the respective spindie does not rotate at said" stations. However, spindle I9 may ride of! the cam I981 between stations I98 and I9I, so that an operator can insert additional terminals 3' in the bores 3171M 

